Machine-Type Device For Raising Machine Punches of the Type Using Adiabatic Energy Change

Abstract

In a machine using adiabatic energy change and including a worktable, a punch guiding body, a punch and punch lifting cylinders, the worktable and the guiding body are configured to enable sets of lifting push elements or rods to be positioned and moved. The push elements are arranged in aligned pairs and urged by cylinders provided beneath the worktable of the machine; an upper push rod sliding in the guiding body being adapted to co-operate with the punch to be lifted during certain operating phases.

1 . Punch raising device for machine using conversion of adiabatic energy, the machine including a work table, a punch guide body, a punch and punch lifting cylinders, wherein the work table and the punch guide body are arranged for positioning and moving pairs of raising pushers elements placed in aligned pairs and actuated by cylinders placed under the work table of the machine, an upper pusher element sliding in the guide body cooperating with the punch to lift the punch according to certain operating phases. 
   
   
       2 . Device according to  claim 1 , wherein the work table has vertical cavities from an underside and along a whole height of the work table defining three specific zones:
 a first zone defining a recess for passage of a rod of a cylinder wherein an end of the rod receives a bearing and thrust base,   a second zone, consecutive to the first zone and in its vertical prolongation, being established over a long length and allowing passage and guiding of a first raising pusher element,   an upper zone in prolongation and aligned with the first and second zones, having a larger cross section than the second zone for thereby allowing controlled movement of the upper part of the first raising pusher element, and wherein a connection between the second and upper zones and having different cross sections precisely constitutes a bearing and retaining surface forming a stop of the first raising pusher elements.   
   
   
       3 . Device according to  claim 2 , wherein the cylinder is fixed vertically in any appropriate manner with regard to the underside of said table. 
   
   
       4 . Device according to  claim 2 , wherein the first raising pusher element comprises a cylindrical or other cross section rod, with a lower end facing and opposite to the base of the cylinder,
 and an upper end is arranged slightly set back with a peripheral shoulder having a larger cross section.   
   
   
       5 . Device according to  claim 4 , wherein, in a situation of inactive loading of the cylinder, the raising pusher element rests on the stop,
 and the upper end of the raising pusher element is substantially set back from an upper horizontal plane of the machine work table, hence without overhang.   
   
   
       6 . Device according to  claim 4 , wherein the number of cylinders and thus number of raising pusher elements is predefined, and the pusher elements and receiving cavity surround a cavity for removing cutout parts of a worked plate formed in the table of the machine. 
   
   
       7 . Device according to  claim 2 , n wherein the punch guide body is arranged with a plurality of holes passing through vertically, and being positioned in an axial alignment with each of the cavities formed in the work table and allowing the passage of the raising pusher elements and wherein holes identical in number to the cavities ( 20   a ) allow Propositioning of a second raising pusher element. 
   
   
       8 . Device according to  claim 7 , wherein each pusher element has a greater length than a height of the punch guide body, so as to overhang in an upper plane, in a shouldered head having a larger cross section than a built-in part in the guide body, and said head bears against a horizontal upper side of the guide body, in the low position, and wherein the lower end of the each pusher element does not overhang from a lower horizontal plane of the punch guide body, and wherein arrangement of the said pusher elements is such that the pusher elements are opposite and below a head of the punch. 
   
   
       9 . Device according to  claim 1 , wherein the upper pusher element is positioned under a head of a cylinder to lift the cylinder. 
   
   
       10 . Device according to  claim 1 , wherein the upper pusher element is positioned under a hammer block on which a cylinder head bears for lifting said cylinder.